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                python csv库
              
            
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        <h2 id="CSV文件"><a href="#CSV文件" class="headerlink" title="CSV文件"></a>CSV文件</h2><p>csv一般用作表格文件，直接用文本编辑器打开也可读，行与行之间就是换行隔开，列与列之间就是逗号隔开。python标准库中的csv库就是用来读写csv文件的。<br>例如如下数据：data.csv<br><figure class="highlight plain"><table><tr><td class="code"><pre><span class="line">Symbol,Price,Date,Time,Change,Volume</span><br><span class="line">&quot;AA&quot;,39.48,&quot;6/11/2007&quot;,&quot;9:36am&quot;,-0.18,181800</span><br><span class="line">&quot;AIG&quot;,71.38,&quot;6/11/2007&quot;,&quot;9:36am&quot;,-0.15,195500</span><br><span class="line">&quot;AXP&quot;,62.58,&quot;6/11/2007&quot;,&quot;9:36am&quot;,-0.46,935000</span><br><span class="line">&quot;BA&quot;,98.31,&quot;6/11/2007&quot;,&quot;9:36am&quot;,+0.12,104800</span><br><span class="line">&quot;C&quot;,53.08,&quot;6/11/2007&quot;,&quot;9:36am&quot;,-0.25,360900</span><br><span class="line">&quot;CAT&quot;,78.29,&quot;6/11/2007&quot;,&quot;9:36am&quot;,-0.23,225400</span><br></pre></td></tr></table></figure></p>
<h2 id="python如何操作CSV文件"><a href="#python如何操作CSV文件" class="headerlink" title="python如何操作CSV文件"></a>python如何操作CSV文件</h2><h4 id="读取CSV文件"><a href="#读取CSV文件" class="headerlink" title="读取CSV文件"></a>读取CSV文件</h4><figure class="highlight python"><table><tr><td class="code"><pre><span class="line"><span class="keyword">import</span> csv</span><br><span class="line"><span class="keyword">with</span> open(<span class="string">"data.csv"</span>) <span class="keyword">as</span> f:</span><br><span class="line">	f_csv = csv.reader(f)</span><br><span class="line">	<span class="keyword">for</span> row <span class="keyword">in</span> f_csv:</span><br><span class="line">		print(<span class="string">"Symbol is :"</span>,row[<span class="number">0</span>])</span><br><span class="line">		print(<span class="string">"Price is :"</span>,row[<span class="number">1</span>])</span><br><span class="line">		print(<span class="string">"Date is :"</span>,row[<span class="number">2</span>])</span><br><span class="line">		print(<span class="string">"Time is :"</span>,row[<span class="number">3</span>])</span><br><span class="line">		print(<span class="string">"Symbol is :"</span>,row[<span class="number">4</span>])</span><br><span class="line">		print(<span class="string">"Volume is :"</span>,row[<span class="number">5</span>])</span><br></pre></td></tr></table></figure>
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              <div class="post-toc-content"><ol class="nav"><li class="nav-item nav-level-2"><a class="nav-link" href="#CSV文件"><span class="nav-number">1.</span> <span class="nav-text">CSV文件</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#python如何操作CSV文件"><span class="nav-number">2.</span> <span class="nav-text">python如何操作CSV文件</span></a><ol class="nav-child"><li class="nav-item nav-level-4"><a class="nav-link" href="#读取CSV文件"><span class="nav-number">2.0.1.</span> <span class="nav-text">读取CSV文件</span></a></li></ol></li></ol></li></ol></div>
            

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